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Billings, Mont. – March 1, 2023 – NorthWestern Energy’s $34 million Rimrock Substation upgrade project will increase capacity to provide service for increased energy demand in the Billings area. Redundancy enhancement will provide improved reliability for customers. NorthWestern Energy worked with the city of Billings to secure additional property for the upgrade. Construction on an additional substation at the site began in 2022.

The final phase of this complex project includes replacing wooden power line structures from the 1950s, upgrading transmission lines and replacing power poles.

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